Antasma

When summon: sacrifice 4 tokens.
HP: 5-----Flying, Lifelink and hexproof.
Enter battlefield with 8 0/3 nightmare rocks and Nightmare (enchantment token)
At your turn, summon 4 0/3 nightmare rocks.
{t}: eat X+1 token creature where X is amount of counters on him. Get +1
{2}, once per his upkeep: choose target creature.
place him in 1 nightmare rocks. If destroyed by
him, remove from game, otherwise on
battlefield tapped.